Effect of growth temperature on the structure and optical properties of ZnO nanorod arrays grown on ITO substrate

Zhang, Lingcui; Ruan, Yongfeng; Liu, Yali; Zhang, Ying

doi:10.1002/crat.201300216

Cited by 11 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar trend was observed from other studies [ 66 ]. Contrary to our results, the band gap energy obtained from absorbance spectra increased as the temperature increased from 70 °C to 90 °C due to quantum confinement effect [ 67 ].…”

Section: Resultscontrasting

confidence: 99%

Effects of growth conditions on properties of CBD synthesized ZnO nanorods grown on ultrasonic spray pyrolysis deposited ZnO seed layers

Mosalagae

Murape

Lepodise

2020

Heliyon

View full text Add to dashboard Cite

ZnO nanorods were synthesized on a seed layer coated glass substrate using chemical bath deposition (CBD). Prior to growth, a seed layer had been prepared via ultrasonic spray pyrolysis method. The aim was to explore the influence of varying the chemical bath deposition conditions namely: growth time, bath temperature and concentration levels of the precursor on the orientation, structural, optical and vibrational properties of the subsequently grown nanorods. The presence of ZnO nanorods resembling the hexagonal-wurtzite structure having preference of orientation along the c-axis and varying crystallinity under different growth parameters was confirmed by X-ray diffraction (XRD). Scanning Electron Microscopy (SEM) acquired images of uniformly arranged and vertically oriented ZnO nanorods grown at a relatively higher bath temperature of 90 °C and shorter growth period of 2 h. UV/Vis/NIR spectrophotometer measurements revealed an optical transmittance of between 50 – 70 % for the nanorods. Raman spectroscopy results confirmed the presence of Raman active E 2(low) and E 2(high) modes corresponding to 98 cm −1 and 478 cm −1 belonging to the hexagonal ZnO phase. This work shows that the orientation, structural, optical and vibrational properties of the grown nanorod structures are controlled via alteration of the growth parameters.

show abstract

Section: Resultscontrasting

confidence: 99%

Effects of growth conditions on properties of CBD synthesized ZnO nanorods grown on ultrasonic spray pyrolysis deposited ZnO seed layers

Mosalagae

Murape

Lepodise

2020

Heliyon

View full text Add to dashboard Cite

show abstract

“…The influence of different annealing temperatures on the absorption spectra of the samples with a ratio of ω ZnO , ω P3HT , and ω P3HT‑ b ‑PEO of 2:1:1 are shown in Figure b. For all films, an absorption at around 330 nm is observed, with a value similar to that in the reported work, which suggests a successful synthesis of ZnO nanoparticles. ,, The increased intensity of the peak observed for the hybrid films with the ratio of ω ZnO , ω P3HT , and ω P3HT‑ b ‑PEO of 2:1:1 might be due to the decreasing size of the formed ZnO nanoparticles and the improved monodispersity of the ZnO nanoparticles. , The other three absorption peaks present at approximately 518, 550, and 600 nm originate from the P3HT polymer. The maximum absorption at 518 nm and the two distinct shoulders at 550 and 600 nm are assigned to 0–2, 0–1, and 0–0 transitions, respectively, in P3HT. , The absorption shoulder related to 600 nm can be assigned to the intermolecular π–π stacking of P3HT.…”

Section: Resultssupporting

confidence: 69%

“…31,60,61 The increased intensity of the peak observed for the hybrid films with the ratio of ω ZnO , ω P3HT , and ω P3HT-b-PEO of 2:1:1 might be due to the decreasing size of the formed ZnO nanoparticles and the improved monodispersity of the ZnO nanoparticles. 62,63 The other three absorption peaks present at approximately 518, 550, and 600 nm originate from the P3HT polymer. The maximum absorption at 518 nm and the two distinct shoulders at 550 and 600 nm are assigned to 0−2, 0−1, and 0−0 transitions, respectively, in P3HT.…”

Section: Resultsmentioning

confidence: 99%

Tuning of the Morphology and Optoelectronic Properties of ZnO/P3HT/P3HT-b-PEO Hybrid Films via Spray Deposition Method

Bießmann

Schwartzkopf

Roth

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The self-assembly of amphiphilic diblock copolymers yields the possibility of using them as a template for tailoring the film morphologies of sol-gel chemistry-derived inorganic electron transport materials, such as mesoporous ZnO and TiO. However, additional steps including etching and backfilling are required for the common bulk heterojunction fabrication process when using insulating diblock copolymers. Here, we use the conducting diblock copolymer poly(3-hexylthiophene)- block-poly(ethylene oxide) (P3HT- b-PEO) in which P3HT acts as charge carrier transport material and light absorber, whereas PEO serves as a template for ZnO synthesis. The initial solution is subsequently spray-coated to obtain the hybrid film. Scanning electron microscopy and grazing-incidence small-angle X-ray scattering measurements reveal a significant change in the morphology of the hybrid films during deposition. Optoelectronic properties illustrate the improved charge separation and charge transfer process. Both the amount of the diblock copolymer and the annealing temperature play an important role in tuning the morphology and the optoelectronic properties. Hybrid films being sprayed from a solution with the ratio of ω, ω, and ω of 2:1:1 and subsequent annealing at 80 °C show the most promising morphology combined with an optimal photoluminescence quenching. Thus, the presented simple, reagent- and energy-saving fabrication method provides a promising approach for a large-scale preparation of bulk heterojunction P3HT/ZnO films on flexible substrates.

show abstract

Photocatalytic activity of Ag‐ZnO heterostructure for degradation of rhodamine B under direct sunlight

Zhai

Wang

Sun

et al. 2014

Crystal Research and Technology

View full text Add to dashboard Cite

Ag‐ZnO heterostructure was obtained through a simple method that is suitable for general laboratory production. The X‐ray diffraction (XRD), transmission electron microscopy (TEM) results showed that Ag‐ZnO heterostructure had excellent purity and crystalline properties. Meanwhile, the catalytic degradation results demonstrated that it had high photocatalytic activity to the degradation of rhodamine B (RhB). Besides, in order to explore the optimum catalytic activity of the sample, the influences of experimental parameters including additives, the amount of catalyst, the concentration and initial pH of RhB were studied in detail.

show abstract

Effect of growth temperature on the structure and optical properties of ZnO nanorod arrays grown on ITO substrate

Cited by 11 publications

References 38 publications

Effects of growth conditions on properties of CBD synthesized ZnO nanorods grown on ultrasonic spray pyrolysis deposited ZnO seed layers

Effects of growth conditions on properties of CBD synthesized ZnO nanorods grown on ultrasonic spray pyrolysis deposited ZnO seed layers

Tuning of the Morphology and Optoelectronic Properties of ZnO/P3HT/P3HT-b-PEO Hybrid Films via Spray Deposition Method

Photocatalytic activity of Ag‐ZnO heterostructure for degradation of rhodamine B under direct sunlight

Contact Info

Product

Resources

About